US8133350B2ActiveUtilityPatentIndex 61
Deinking a cellulosic substrate using magnesium silicate
Est. expiryJul 9, 2028(~2 yrs left)· nominal 20-yr term from priority
D21C 5/027Y02W30/64
61
PatentIndex Score
2
Cited by
24
References
2
Claims
Abstract
A composition and method for deinking is disclosed. The composition and method contain an activated magnesium silicate or a magnesium silicate.
Claims
exact text as granted — not AI-modifiedWe claim:
1. A method of removing ink from a cellulosic containing substance comprising:
(a) adding to the substance a composition comprising: (1) magnesium silicate, (2) water, (3) xanthan gum, (4) tall oil fatty acid; and (5) sodium lauryl sulfate;
(b) optionally excluding adding caustic soda to the cellulosic containing substance; and
(c) optionally excluding adding hydrogen peroxide to the cellulosic containing substance.
2. The method of claim 1 wherein the composition is comprised of about 18% of said magnesium silicate; about 0.288% xanthan gum; about 22% tall oil fatty acid; and about 2% sodium lauryl sulfate.Cited by (0)
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